MRI T2 mapping sequence concordance with CT-arthrography for knee cartilaginous lesions in traumatic and degenerative lesions
(2013) Journal de Traumatologie du Sport — Vol. 30, n° 3, p. 146-153 (2013)
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- Abstract
- Objective: To assess the concordance of MRI T2 mapping sequence with CT-arthrography for traumatic and degenerative chondral lesions. Subjects and methods: Fifteen consecutive patients were included prospectively from September2011 to April2012. They referred for CT-arthrography examination for degenerative or traumatic knee pain and had also knee 3. T MRI with T2 mapping sequences. CT-arthrography was used as benchmark diagnostic test for chondral lesion, read in a consensual way by two senior musculo-skeletal radiologists. The same, blinded to CT-arthrography results, independently reviewed standard and T2 Mapping MRI sequences and rated number of hyaline cartilage lesions, and their grade according to the International Cartilage Research Society Score (ICRS) in each anatomical compartment. Size and T2 value of the largest lesion was measured. We used Mac Nemar test to assess concordance between MRI and CT-arthrography findings, a regression model to compare CT-arthrography ICRS classification to T2 values, and Wilcoxon test for inter-reader agreement. Results: Because of artifact and loss to follow-up, 11patients were finally included. Concordance of T2 mapping MRI with CT-arthrography for reader1 and reader2 were respectively 90% and 80% in medial compartment, 50% and 70% in lateral compartment, 90% and 70% in anterior compartment. There was no significant correlation between CT-arthrography ICRS classification and T2 values (P>0.06). No significant differences between reader1 and reader2 were observed when evaluating the prevalence of knee lesions (P=0.25 for the medial compartment, P=0.62 for the lateral compartment and P=1 for the anterior zone). Conclusion: T2 mapping is a reproducible imaging technique, with a good concordance to CT-arthrography for detection and size of chondral lesions, with no correlation between CT-arthrography ICRS grade and T2values. © 2013 Elsevier Masson SAS.
Citations
Dallaudière, B., Dautry, R., Perozziello, A., Manelfe, J., Loriaut, P., Larbi, A., Paris, G., Silvestre, A., Koch, P., Boyer, P., Schouman-Claeys, E., Bousson, V., & Laredo, J.-D. (2013). MRI T2 mapping sequence concordance with CT-arthrography for knee cartilaginous lesions in traumatic and degenerative lesions. Journal de Traumatologie du Sport, 30(3), 146-153. https://doi.org/10.1016/j.jts.2013.07.011 (Original work published 2013)